اثر ارزش افزوده‌ و شدت مصرف انرژی بر انتشار آلودگی‌های زیست‏ محیطی از بخش کشاورزی: کاربرد الگوی خودتوضیحی با وقفه‌های گستردة پنلی (Panel ARDL)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری اقتصاد منابع طبیعی و محیط زیست، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران

2 استادیار اقتصاد کشاورزی، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران.

چکیده

هدف پژوهش حاضر بررسی رابطه میان رشد اقتصادی و تخریب محیط زیست در بخش کشاورزی استان­های ایران بود. بدین منظور، ارزش افزوده بخش کشاورزی به‏ عنوان شاخصی از رشد اقتصادی و میزان انتشار گاز دی‌اکسید کربن در بخش کشاورزی به‏ عنوان معیاری از تخریب محیط زیست در نظر گرفته شد. همچنین، داده ­های 24 استان کشور طی دوره 93-1379 از مرکز آمار ایران گردآوری شد. برای بررسی رابطه علی میان متغیرهای مدل، از روش خودتوضیحی برداری پنلی (PVAR) و برای برآورد مدل، از الگوی خودتوضیحی با وقفه­ های گستردة پنلی (Panel ARDL) استفاده شد. نتایج پژوهش نشان داد که یک رابطه علی یک‏طرفه از ارزش افزوده بخش کشاورزی و شدت مصرف انرژی در این بخش به انتشار گاز دی‌اکسید کربن وجود دارد؛ رابطه رشد بخش کشاورزی و میزان انتشار گاز دی­ اکسید کربن نیز به‏ صورت N شکل و از لحاظ آماری معنی‌دار بود. همچنین، نتایج حاکی از آن بود که افزایش نسبی شدت مصرف انرژی در بخش کشاورزی تأثیری مثبت در انتشار گاز دی‌اکسید کربن دارد. در نتیجه، باید سیاست­های آتی بخش کشاورزی دربرگیرندة برنامه ­های مناسب برای حفاظت از محیط زیست طبیعی کشور باشد.

کلیدواژه‌ها

عنوان مقاله [English]

The impact of value added and energy consumption intensity on environmental pollutions from agricultural sector: application of panel auto-regressive distribution lag (Panel ARDL)

نویسندگان [English]

  • N. Kargar Dehbidi 1
  • M. H. Tarazkar 2
1 Ph. D. Student in Economics of Natural Resources and Environment, Faculty of Agriculture, Shiraz University, Shiraz, Iran
2 Assistant Professor of Agricultural Economics, Faculty of Agriculture, Shiraz University, Shiraz, Iran
چکیده [English]

This study aimed at investigating the relationship between economic growth and environmental degradation in agricultural sector among provinces of Iran. Thus, the value added generated by the agricultural sector was utilized as the index of economic growth and Carbon Dioxide emission from the agricultural sector as the environmental degradation index; then, a panel data of 24 provinces of the country over 1990 to 2014 was obtained from statistical center of Iran. The panel vector autoregressive (PVAR) model was employed to study the causal relationship between variables of the model; also, the panel autoregressive distributed lag (Panel ARDL) was used for estimating the model. Empirical results of the study revealed that there was a unidirectional relationship from agricultural value added and energy consumption intensity to agricultural Carbon Dioxide emission. In addition, the relationship between agricultural Carbon Dioxide emission and the agricultural growth was found N-shaped and statistically significant. Moreover, the results indicated that a relative increase in agricultural energy consumption intensity positively affected the Carbon Dioxide emission. As a result, future policies in the agricultural sector should involve appropriate plans for the conservation of environmental and natural resource of the country.

کلیدواژه‌ها [English]

  • Agricultural Value Added
  • Energy Consumption Intensity
  • Carbon Dioxide Emission
  • Panel ARDL
  • Iran (Provinces)

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